The DepDrop widget is a Yii 2 wrapper for the dependent-dropdown jQuery plugin by Krajee. This plugin allows multi level dependent dropdown with nested dependencies. The plugin thus enables to convert normal select inputs to a dependent input field, whose options are derived based on value selected in another input/or a group of inputs. It works both with normal select options and select with optgroups as well.

Note: This extension is a sub repo split of yii2-widgets. The split has been done since 08-Nov-2014 to allow developers to install this specific widget in isolation if needed. One can also use the extension the previous way with the whole suite of yii2-widgets.

The preferred way to install this extension is through composer. Check the composer.json for this extension's requirements and dependencies. Read this web tip /wiki on setting the minimum-stability settings for your application's composer.json.